Ilja Lange, Sina Reiter, Michael Paetzel, Anton Zykov, Alexei Nefedov, Jana Hildebrandt, Stefan Hecht, Stefan Kowarik, Christof Woell, Georg Heimel, Dieter Neher
- Zinc oxide (ZnO) is regarded as a promising alternative material for transparent conductive electrodes in optoelectronic devices. However, ZnO suffers from poor chemical stability. ZnO also has a moderate work function (WF), which results in substantial charge injection barriers into common (organic) semiconductors that constitute the active layer in a device. Controlling and tuning the ZnO WF is therefore necessary but challenging. Here, a variety of phosphonic acid based self-assembled monolayers (SAMs) deposited on ZnO surfaces are investigated. It is demonstrated that they allow the tuning the WF over a wide range of more than 1.5 eV, thus enabling the use of ZnO as both the hole-injecting and electron-injecting contact. The modified ZnO surfaces are characterized using a number of complementary techniques, demonstrating that the preparation protocol yields dense, well-defined molecular monolayers.
MetadatenVerfasserangaben: | Ilja Lange, Sina Reiter, Michael Paetzel, Anton Zykov, Alexei Nefedov, Jana HildebrandtORCiDGND, Stefan Hecht, Stefan Kowarik, Christof Woell, Georg Heimel, Dieter NeherORCiDGND |
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DOI: | https://doi.org/10.1002/adfm.201401493 |
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ISSN: | 1616-301X |
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ISSN: | 1616-3028 |
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Titel des übergeordneten Werks (Englisch): | Advanced functional materials |
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Verlag: | Wiley-VCH |
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Verlagsort: | Weinheim |
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Publikationstyp: | Wissenschaftlicher Artikel |
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Sprache: | Englisch |
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Jahr der Erstveröffentlichung: | 2014 |
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Erscheinungsjahr: | 2014 |
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Datum der Freischaltung: | 27.03.2017 |
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Freies Schlagwort / Tag: | ZnO; electrodes; phosphonic acid; self-assembled monolayers; surface modification |
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Band: | 24 |
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Ausgabe: | 44 |
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Seitenanzahl: | 11 |
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Erste Seite: | 7014 |
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Letzte Seite: | 7024 |
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Fördernde Institution: | German Research Foundation (DFG) [SFB 951]; "Science and Technology of
Nanosystems" Programme (Molecular Building Blocks/Supramolecular
Networks) [431103] |
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Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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Peer Review: | Referiert |
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